The next generation of one of AOR's most legendary communications receivers has arrived. The new AR5001D features the popular analog signal meter along with a large easy-to-read digital spectrum display. Developed to meet the monitoring needs of security professionals and government agencies, all functions of the AR5001D can be controlled through a PC running Windows XP or higher. Up to three channels can be monitored simultaneously and its advanced signal detection capabilities detect hidden transmitters which may be operating illegally and also provide protection against eavesdropping by detecting miniature transmitters (bugs). Standard features include monitoring and storage of up to 2000 frequencies, 45 MHz IF digital signal processing, direct digital sampling, a high performance analog RF front-end, and a DDS local oscillator. The AR5001D can be operated by remote control using an optional LAN controller. It can also be used for unattended long-term monitoring by an internal SD audio recorder or spectrum recording with optional AR-IQ software for laboratory signal analysis. With an optional GPS unit, the internal reference oscillator of the AR5001D will be locked with the GPS frequency standard signal and provide 0.01 ppm accuracy. Optional P25 decoder enables monitoring of APCO25 digital format signals.